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Ordering number:ENN5174

Thick Film Hybrid IC

STK405-030
2ch AF Power Amplifier (Split Power Supply) (20W + 20W min, THD = 10%)
Overview
The STK405-030, a member of the STK405-000 series, is a low-cost, 2-channel audio power amplifier hybrid IC that is ideal for a wide range of stereo sets. It has dedicated 6 output drive, in contrast with the STK401-000 series which supports 6/3 output drive.

Package Dimensions
unit:mm 4158
[STK405-030]
64.0 55.6 8.5

Features
· Class B amplifiers · Output load impedance RL=6 support · EIAJ-output compatible (f=1kHz, THD=10%) · Low supply switching shock noise · Pin assignment grouped into individual blocks of inputs, outputs and supply lines to minimize the adverse effects of pattern layout on operating characteristics · External boostrap circuit not necessary · Standby operation possible using external circuit · Voltage gain VG=26dB for easy gain distribution within the set · Member of 10W/ch to 80W/ch pin-compatible series
16.5 21.0 31.0
3.6

1 2.54 (11.29) 13×2.54=33.02

14 0.5

25.8

2.9 0.4 5.5

SANYO : SIP14

Series Organization
The following devices form a series with differing output capacity. Some of the following devices are under development. Contact your Sanyo sales representative if you require more detailed information.
Type No. STK405-010 STK405-030 STK405-050 STK405-070 STK405-090 STK405-100 STK405-110 STK405-120 Output power 10W + 10W 20W + 20W 30W + 30W 40W + 40W 50W + 50W 60W + 60W 70W + 70W 80W + 80W Supply voltage [V] VCC max ±26.0 ±30.5 ±34.5 ±39.0 ±42.0 ±45.0 ±50.0 ±52.5 VCC ±14.0 ±18.5 ±22.0 ±25.0 ±26.5 ±29.0 ±31.0 ±33.0

Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges,or other parameters) listed in products specifications of any and all SANYO products described or contained herein.

SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
O3099TH (KT)/O1295HA (ID) No.5174­1/6

4.0

STK405-030 Specifications
Maximum Ratings at Ta = 25°C
Parameter Maximum supply voltage Thermal resistance Junction temperature Operating temperature Storage temperature Available time for load short-circuit Symbol VCC max j-c Tj Tc Tstg ts VCC=±18.5V, RL=6, f=50Hz, PO=20W Per power transistor Conditions Ratings ±30.5 3.4 150 125 ­30 to +125 1 Unit V

°C/W °C °C °C
s

Operating Characteristics at Ta = 25°C, RL=6 (noninductive load), Rg=600, VG=26dB
Parameter Quiescent current Output power Total harmonic distortion Frequency response Input impedance Output noise voltage Neutral voltage Symbol ICCO PO THD fL, fH ri VNO VN Conditions VCC=±24.0V, no load VCC=±18.5V, f=1kHz, THD=10.0% VCC=±18.5V, f=1kHz, PO=5.0W VCC=±18.5V, PO=1.0W, +0 dB ­3 VCC=±18.5V, f=1kHz, PO=1.0W VCC=±24.0V, Rg=10k VCC=±24.0V ­100 20 0.04 20 to 50k 55 0 +100 0.1 Ratings min ty p 12 max 20 Unit mA W % Hz k 1.2 mVrms mV

Note. All tests are measured using a constant-voltage supply unless otherwise specified. Available time for load short-circuit and output noise voltage are measured using the transformer supply specified below. The output noise voltage is the peak value of an average-reading meter with an rms value scale (VTVM). A regulated AC supply (50Hz) should be used to eliminate the effects of AC primary line flicker noise. Specified Transformer Supply (RP-22 or Equivalent)

No.5174­2/6

STK405-030
Block Diagram

Test Circuit

No.5174­3/6

STK405-030
Sample Application Circuit (Standby Mode Supported)

Heatsink Design Considerations The heatsink thermal resistance, c-a, required to dissipate the STK405-030 device total power dissipation, Pd, is determined as follows : Condition 1: IC substrate temperature not to exceed 125°C Pd×c-a+Ta<125°C ............................................ (1) Where Ta is the guaranteed maximum ambient temperature. Condition 2: Power transistor junction temperature, Tj, not to exceed 150°C Pd×c-a+Pd/N×j-c+Ta<150°C ......................... (2) where N is the number of power transistors and j-c is the power transistor thermal resistance per transistor. Note that the power dissipated per transistor is the total, Pd, devided evenly among the N power transistors. Expressions (1) and (2) can be rewritten making c-a the subject. c-a< (125­Ta)/Pd ............................................ (1)' c-a< (150­Ta)/Pd­j-c/N ................................ (2)'

The heatsink required must have a thermal resistance that simultaneously satisfied both expressions. The heatsink thermal resistance can be determined from (1)' and (2)' once the following parameters have been defined. · Supply voltage : VCC · Load resistance : RL · Guaranteed maximum ambient temperature : Ta The total device power dissipation when STK405-030 VCC=±18.5V and RL=6, for a continuous sine wave signal, is a maximum of 23.5W, as shown in the Pd­PO characteristics graph. When estimating the power dissipation for an actual audio signal input, the rule of thumb is to select Pd corresponding to 1/10 PO max (within safe limits) for a continuous sine wave input. For example, Pd=16W [for 1/10 PO max=2W] The STK405-030 has 4 power transistors, and the thermal resistance per transistor, j-c, is 3.4°C/W. If the graranteed maximum ambient temperature, Ta, is 50°C, then the required heatsink thermal resistance, c-a, is :
No.5174­4/6

STK405-030
From expression (1)' : c-a < (125­50)/16 < 4.68 From expression (2)' : c-a < (150­50)/16­3.4/4 < 5.40 Therefore, to satisfy both expressions, the required heatsink must have a thermal resistance less than 4.68°C/W. The heatsink design example is based on a constant-voltage supply, and should be verified within your specific set environment.

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STK405-030

Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products(including technical data,services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be expor ted without obtaining the expor t license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only ; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of October, 1999. Specifications and information herein are subject to change without notice.
PS No.5174­6/6